mestranol (mes-tră-nol) n. a synthetic female sex hormone (see oestrogen) used, in combination with norethisterone (a progestogen), as an oral contraceptive. Trade name: Norinyl-1.
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sex chromosome , sex chromosome A chromosome whose presence or absence is linked with the sex of the bearer, and that plays a role in sex determination. It is present… Heterogametic Sex , heterogametic sex The sex that has sex chromosomes that differ in morphology (e.g. XY), and that therefore produces two different kinds of gametes wi… Homogametic Sex , Skip to main content homogametic sex Trade Name , TRADE NAME Names or designations used by companies to identify themselves and distinguish their businesses from others in the same field. Trade names… carpogonium , carpogonium (pl. carpogonia) The female gametangium of the red algae (see Rhodophyta). Carpogonia, which are found at the tips of the female gametoph… Archegonium , Skip to main content archegonium archegonium (pl. archegonia) The multicellular flask-shaped female sex organ of bryophytes, clubmosses, horsetails,…
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